backward vs receding

backward is not a noun while receding is a noun.

Word	Noun	Adjective	Verb	Adverb
backward	No	Yes	No	Yes
receding	Yes	Yes	No	No

backward (noun)	receding (noun)
	the act of becoming more distant
	a slow or gradual disappearance

backward (adjective)	receding (adjective)
directed or facing toward the back or rear	(of a hairline e.g.) moving slowly back
(used of temperament or behavior) marked by a retiring nature
retarded in intellectual development
having made less than normal progress

backward (adverb)	receding (adverb)
in a manner or order or direction the reverse of normal
in or to or toward a past time
at or to or toward the back or rear